Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.
Bibliographical noteCopyright (2001) American Physical Society
- SEMICONDUCTOR INTERFACE
- IN0.53GA0.47AS/IN0.52AL0.48AS HETEROSTRUCTURE
- GATE CONTROL
- ANISOTROPIC MAGNETORESISTANCE
- ORBIT INTERACTION